Clutch for spools of paper-rolls.



W. SHEAHAN,

CLUTCH FOR SPOOLS OF PAPER ROLLS. APPLICATION FILED 11111.21, 1912.RENEWED JULY 2, 1914.

Patented D60. 29, 1914.

W/Z/jSSES: M INVENTOIR I Wfiwm L ATTORNEY NORRIS PETERS 60..PHOTO-ILITHOH WASHINGTON, D, G

UNITED STATES PATENT WILLIAM SHEAI-IAN, OF OREGON CITY, OREGON.

CLUTCH FOR SPOOL-S 0F PAPER-ROLLS.

Specification of Letters Patent.

Patented Dec. 29, 1214.

Application filed January 27, 1912, Serial No. 673,938. Renewed; July 2,1914. Serial No. 848,203.

To aZZ whom it may concern:

Be it known that I, WILLIAM SHEAHAN, a citizen of the United States, anda resident of Oregon City, Olackamas county, State of Oregon, haveinvented a certain new and useful Improvement in Clutches for Spools ofPaper-Rolls, of which the following is a specification.

This invention relatesto a clutch, for paper rolls, of the typeheretofore invented by me and described in my pending application forLetters Patent of the United States, filed April 22, 1911, Serial Number622,826, and my present invention has for its object to obtain furtherimprovements and benefits, the necessity of which I discovered since mysaid prior invention. Namely: in some printing presses the rolls ofpaper are unwound clockwise and in others they are unwound in theopposite direction; hence in establishments happening to use both typesof presses, it would necessitate the keeping on hand of right andleft-hand clutches for the spools on which the roll of paper is wound,unless the clutch used is adapted to operate properly with either typeof press. Furthermore, where said two. types of presses are used and aparticular clutch must be used for each, it may happen, in the rush ofwork, that the clutches are exchanged, and if the wrong clutch were usedthe press could not work, the roll of paper would have to be unmounted,and consequently causing considerable loss of time.

My invention therefore has for its direct purpose to so further improvemy said clutch as to adapt it for use regardless of the direction inwhich the paper roll is to be rotated.

I attain my purpose by using, in place of my former sleeve and segmentalwedges, a sleeve of which the periphery is formed to represent equalconical surfaces, with their larger faces abutting, and segmental Wedgesformed with corresponding interior surfaces: the devices beingpreferably arranged as illustrated in the accompanying drawings,constituting a part of this specification.

In the drawings: Figure 1 is a sectional elevation of my clutch mountedon a shaft and arranged as in practice for clamping the paper spool onthe shaft; Fig. 2 is a left-end elevation with respect to Fig. 1; Fig. 3is a top view of the arm of-the nut and the adjustablelock-pin thereininserted;

Fig. 4 is a perspective detail of one, of the segmental wedges employedby me; Fig. 5 is a diagrammatic view showing the abutting portions oftwo segmental wedges lying side by side and the insertion of the lockpinbetween them, in order to connect the Wedges with the nut by which thelatter are set out and in; and Fig. 6 is a fragmental, diagrammaticillustration of the mode of operation of my improved clutch.

The shaft a, is designed to be rotatably journaled at its ends insuitable bearings, not shown. It is formed with a flat face, I), so asto restrain the sleeve 0, mounted thereon, against rotation. The sleeve,0, is of uniform diameter at the end (Z, where it is provided with aperipheral thread, 6, and the middle portion of the sleeve is formedwith a series of double cone surfaces as j". The eye of the sleeveconforms to the peripheral contour of the shaft a, being provided with.a flat surface as shown at b in Fig.2. On the threaded end, 0, of thesleeve is mounted a nut h, which may be formed in two pieces, connectedby bolts h inserted through ears if, as shown in Fig.

2; such construction being necessary when the shaft, a, is formed withan integral collar, instead of a movable collar w, clamped in place by aset-screw y. T he nut h is made with an annular flange 2', formed withan interior annular rib j.

g is the spool, preferably made of paper so as to obtain cheapness inmanufacture and saving of freight. WVithin the spool q are placed aseries, for example, four, of segmental wedges 7), having their innerfaces formed with a series of double conical faces 79*, 0 correspondingwith the conical surfaces f, 7, of the sleeve 0; the conical surfaces ofthe wedges being adapted to permit a slight longitudinal movement of thelatter on the sleeve 0, and causing the surfaces 79 or 79 of the wedgesto climb up on and lock with the opposing surfaces 7 or f of the sleeve0, as diagrammatically illustrated in Fig; 6. The segmental wedges p arerespectively made at their left-hand extremity (with respect to theirposition in Figs. 1 and 4) with a flange 79 formed with acircumferential groove 1", corresponding with the inner rib j of theflange z of the nut 72.

In order that my clutch will work properly. it is necessary that thecone surface of the sleeve 0 and the related surfaces of tegral arm 2'',as shownin Figs. 1 and 2-. In the arm 71 of the nut h is provided alock-pin lying side by in the arm 71.

7c, threaded on a cylindrical shank 7a, which is formed witha flat head71: 011 which is formed a circular head If. The arm '2" is made with acavity as a, in which to receive the flat head 70 of the lock-pin. At 2'the arm 2" is formed with an annular enlargement in which is seated thecoil-spring m bearing against the shouldered portion 70 of the lock-pin7a.

.The flanges p of the wedge segments, '39, I

at the abutting fa'ces of the two segments side, are cut away, as illus-Figs. 4 and 5, so as to permit trated at s in .the lock-pin 7a to beprojected between such two wedge segments, thereby connecting the nutwith the segmental wedges. Should the manual rotation of the nut h onthe sleeve. 0 not accomplish the full expansion. of the segmental wedgesp, said lock-pin 70 will hold the wedge segments against rotation on thesleeve 0, and the frictional contact between the outer faces of thewedge segments v and the coreof the spool will hold the clutch againstrotation in the spool. The lock-pin 7c is released by lifting it againstthe tension of the coil-spring m and so arranging it that the web k willbe seated crosswise of instead of in the "cavity a, therefor providedsegments may move each on the other; but, by reason of the greaterfriction being imposed upon the outer facesof the segmental wedges, incontact with the spool q, the sleeve 0 does all the traveling to and froon the shaft a, during the operation of tightening and releasing thespool. The conical surfaces of the sleeve and the segmental wedges arearranged at a steep inclination, in short steps, so that a single turnof the nut it causes maximum expansion of my clutch. The clutch is'inthe first instance thrown manually by rotating the nut h; and if,afterward, during service, the wedgeel'ement should become loose androtate on the sleeve, the clutch will be automatically retightened byreason of thenut being locked with the wedge-element and caused to 1'0-Copies 01' this patent may be obtained for five cents each. byaddressing the Washington; D;

The sleeve 6 and the wedge tate therewith, thus moving the sleeve, 0,relatively longitudinally and again tightening the clutch.

I claim:

. 1. In a clutch element of the character described, a sleeve adapted tobe mounted on a shaft, means for holding said sleeve against rotating onthe shaft, one end of said sleeve being threaded and the other formedwith a series of peripheral, contiguous, conical surfaces, tapered in,opposite directions, said conical surfaces being of short length andtheir tapered faces of steep inclination; a segmental wedge havingcorresponding conical surfaces, said segmental wedge being adapted forbeing mounted on the sleeve and the abuttingconical surfaces adapted topermit the segmental wedge relative longitudinal movement on the sleeve;a unit on the threaded end ofthe sleeve; and means for connecting thesegmental sleeve with the nut s6 as "to rotate together. I I

2; In a clutch of the character described comprising a sleeve adapted tobe mounted on the shaft and segmental wedges adapted for being mountedon the sleeve, the abutting faces of the sleeve and the wedge 3 formedwith conical surfaces, said sleeve having one end threaded, thesegmental wedges provided at the corresponding end with a peripheralgroove," amt mounted on said threaded end of the sleeve,fsaid nut madewith a peripheral flange adapted for being seated in said groove of thewedge segment; said nut made of divisible parts I and having means forfastening its parts to-' gether; and means for locking one of'thosegmental wedges with the nut, so as to r'o-' tate therewith. c

3. In a clutc'htif the characterdescribed comprisinga sleeve adapted'tobe'mountedon the shaft and segmental wedges adapted for being mounted onthesleeve, the abutting faces of the sleeve, and the wedge, formed withconicalv surfaces, said sleeve having one end threaded, the. segmentalwedges provided at the corresponding end with a peripheral groove, a nutmounted on said threaded end; of the sleeve; said nut made with aperipheral flange adapted for being seated in said groove of the wedgesegment; for being projected between two adjacent wedge segments; andmeans for holding said pin retracted from between the wedge segments.

i I WILLIAM SHEAHAN. Witnesses: Cscri. Lose, WM. C, seminar.

a spring-controlled pin adapted floniiiiis'sioner of Patents,

